As Apple continues to develop watchOS 2.0 for Apple Watch ahead of its release this fall, the company has released watchOS 2 beta 4 to registered developers today for testing the operating system update on Apple Watch.

The upcoming OS update includes a ton of improvements to the platform including support for native apps, third-party complications, new watch faces including using your own photos, a clever Night Stand mode for using the watch as a miniature alarm clock, and several refinements to apps and features like Digital Touch and Siri.

The previous beta included improvements to battery life and Notification Center bugs that plagued earlier betas plus Apple Music support, but Apple ID setup and Apple Pay were disabled for the pre-release software betas. We’ll dig in to the latest beta version and update with notable changes discovered.